BQ24650

ACTIVO

Controlador independiente de carga de batería Buck de 1-6 celdas con entrada solar y MPPT integrado

Detalles del producto

Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 10 Vin (max) (V) 28 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Absolute max Vin (max) (V) 33 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Input OVP, Solar input/MPPT, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 5 Rating Catalog Operating temperature range (°C) -40 to 85
Number of series cells 1, 2, 3, 4, 5, 6 Charge current (max) (A) 10 Vin (max) (V) 28 Cell chemistry Lead Acid, Li-Ion/Li-Polymer, Lithium Phosphate/LiFePO4 Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Absolute max Vin (max) (V) 33 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), Input OVP, Solar input/MPPT, VINDPM (Input voltage threshold to maximize adaptor power) Vin (min) (V) 5 Rating Catalog Operating temperature range (°C) -40 to 85
VQFN (RVA) 16 12.25 mm² 3.5 x 3.5
  • Maximum Power Point Tracking (MPPT) capability by input Voltage regulation
  • Programmable MPPT setting
  • 5-V to 28-V Input solar panel
  • 600-kHz NMOS-NMOS Synchronous buck controller
  • Resistor programmable float voltage
  • Accommodates Li-Ion/Polymer, LiFePO4, lead acid chemistries
  • Accuracy
    • ±0.5% Charge voltage regulation
    • ±3% Charge current regulation
    • ±0.6% Input voltage regulation
  • High Integration
    • Internal loop compensation
    • Internal digital soft start
  • Safety
    • Input overvoltage protection
    • Battery temperature-sensing
    • Battery absent detection
    • Thermal shutdown
  • Charge status outputs for LED or host processor
  • Charge enable on MPPSET pin
  • Automatic sleep mode for low power consumption
    • < 15-µA OFF-state battery discharge current
  • Small 3.5 × 3.5 mm2 16-pin QFN package
  • Maximum Power Point Tracking (MPPT) capability by input Voltage regulation
  • Programmable MPPT setting
  • 5-V to 28-V Input solar panel
  • 600-kHz NMOS-NMOS Synchronous buck controller
  • Resistor programmable float voltage
  • Accommodates Li-Ion/Polymer, LiFePO4, lead acid chemistries
  • Accuracy
    • ±0.5% Charge voltage regulation
    • ±3% Charge current regulation
    • ±0.6% Input voltage regulation
  • High Integration
    • Internal loop compensation
    • Internal digital soft start
  • Safety
    • Input overvoltage protection
    • Battery temperature-sensing
    • Battery absent detection
    • Thermal shutdown
  • Charge status outputs for LED or host processor
  • Charge enable on MPPSET pin
  • Automatic sleep mode for low power consumption
    • < 15-µA OFF-state battery discharge current
  • Small 3.5 × 3.5 mm2 16-pin QFN package

The BQ24650 device is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output.

The BQ24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.

The BQ24650 charges the battery in three phases: pre-conditioning, constant current, and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. The pre-charge timer is fixed at 30 minutes. The BQ24650 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

The BQ24650 supports a battery from 2.1 V to 26 V with VFB set to a 2.1-V feedback reference. The charge current is programmed by selecting an appropriate sense resistor. The BQ24650 is available in a 16 -pin, 3.5 mm × 3.5 mm2 thin QFN package.

The BQ24650 device is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulation loop lowers the charge current so that the solar panel can provide maximum power output.

The BQ24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulation, charge preconditioning, charge termination, and charge status monitoring.

The BQ24650 charges the battery in three phases: pre-conditioning, constant current, and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate. The pre-charge timer is fixed at 30 minutes. The BQ24650 automatically restarts the charge cycle if the battery voltage falls below an internal threshold and enters a low quiescent current sleep mode when the input voltage falls below the battery voltage.

The BQ24650 supports a battery from 2.1 V to 26 V with VFB set to a 2.1-V feedback reference. The charge current is programmed by selecting an appropriate sense resistor. The BQ24650 is available in a 16 -pin, 3.5 mm × 3.5 mm2 thin QFN package.

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Documentación técnica

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Tipo Título Fecha
* Data sheet BQ24650 Stand-Alone Synchronous Buck Battery Charge Controller for Solar Power With Maximum Power Point Tracking datasheet (Rev. B) PDF | HTML 02 oct 2019
Application note How to Charge a Lead-Acid Battery With a Li-Ion Charger 29 abr 2020
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 31 dic 2019
Application note Preventing bq24650 Leakage Current When Using Shaded Solar Panels 19 sep 2016
Analog Design Journal 2Q 2012 Issue Analog Applications Journal 26 abr 2012
Analog Design Journal 4Q 2011 Issue Analog Applications Journal 09 nov 2011
Analog Design Journal Solar charging solution provides narrow-voltage DC/DC system bus for multicell 09 nov 2011
Application note Using the bq24650 to Charge a Sealed, Lead-Acid Battery (Rev. A) 04 oct 2011
Application note How to Review a Multicell Switching Charger Schematic 21 sep 2011
Analog Design Journal 3Q 2011 Issue Analog Applications Journal 16 sep 2011
Application note Maximum Power Point Tracking With the bq24650 Charger. (Rev. A) 15 ago 2011
User guide bq24650EVM Synchronous, Switch-Mode, Battery Charge Controller for Solar Power (Rev. A) 16 oct 2010
Application note Using the bq24650 to Charge a LiFePO4 battery 24 ago 2010

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

BQ24650EVM-639 — Módulo de evaluación síncrono BQ24650, modo conmutado, controlador de carga de batería para energía

The BQ24650EVM Evaluation Module assists users in evaluating the bq24650 synchronous battery charger. The bq24650 is a highly integrated switch-mode battery charge controller. It provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When (...)

Guía del usuario: PDF
Herramienta de cálculo

SLUC175 bq246xx Calculation Tool V1.5

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ24600 Controlador independiente de carga de batería reductor de 1-6 celdas BQ24610 Controlador independiente de carga de batería reductor de 1-6 celdas con entrada de 5 V-28 V BQ24616 Controlador independiente de carga de batería reductor de 1-6 celdas compatible con JEITA BQ24617 Controlador independiente de carga de batería reductor de 1-5 celdas con entrada de 5 V-24 V BQ24618 Controlador independiente de carga de batería reductor de 1-6 celdas compatible con USB con entrada BQ24620 Controlador independiente de carga de batería de 1-7 celdas para baterías de fosfato de litio BQ24630 Controlador independiente de carga de batería de 1-7 celdas para baterías LiFePO4 con alimentación d BQ24640 Controlador independiente de carga de batería reductor de 1-8 celdas para supercondensador BQ24650 Controlador independiente de carga de batería Buck de 1-6 celdas con entrada solar y MPPT integrado
Herramienta de cálculo

SLUC229 MPP Tracking with bq24650 and NTC Thermistor

Productos y hardware compatibles

Productos y hardware compatibles

Productos
Circuitos integrados para cargadores de baterías
BQ24650 Controlador independiente de carga de batería Buck de 1-6 celdas con entrada solar y MPPT integrado
Diseños de referencia

TIDA-00049 — Diseño de referencia del cargador de batería de litio solar del controlador del cargador con modo co

This reference design is featured in solar lithium battery applications. This design, which contains an integrated switch-mode battery charge controller, provides input voltage regulation, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a (...)
Test report: PDF
Esquema: PDF
Encapsulado Pines Símbolos CAD, huellas y modelos 3D
VQFN (RVA) 16 Ultra Librarian

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL) / reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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